to silence these Travis CI GCC compiler warnings:
txrequest.cpp:73:21: warning: ‘{anonymous}::Announcement::m_state’ is
too small to hold all values of ‘enum class {anonymous}::State’
State m_state : 3;
^
The warnings are based on the maximum value held by the underlying uint8_t
enumerator type, though the intention of the bitfield declaration is the
maximum declared enumerator value.
The warning been silenced in GCC 8.4+ and 9.3+ according to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414
This adds a new module (unused for now) which defines TxRequestTracker, a data
structure that maintains all information about transaction requests, and coordinates
requests.
